Here is what I can testify to....
I bought a SRC with 1979 date code in March of 1980 , NIB imported by Navy Arms, I know (having bought a case of 38's) I put over a thousand , probably closer to 1600 through it, by the time it was sold in 1988. Never a hickup in 8 years which includes no broken ladle.
All rounds were factory loads of various manufactures.
I sold it and it has stayed around these parts, and as far as I know has not broken , least ways the PO said it has not
Several Henry's later and still have 3 of those (2 are 45's) (one is a 44/40 HRA ) and a 73 in 44spcl.
Aside from a buggered magazine spring in a early 1979 Uberti/Navy Arms 44/40 Henry ( my fault) bought NIB , they all have been used in CAS.
Now then, enter a Uberti 66 short rifle in 38spcl. bought NIB from Taylor's in 2012, ladie broke first shot on a second stage
so after a 10 round prior stage... or 11th round it broke.
This was not my gun, but belongs to my shooting pard so I know it well enough... I repaired it with replacement sent free of charge
by the girls at Taylor's and now 7 years later , it has not broken...
Truth be known, my Pard changes up with Marlin 94 Cowboy in 45 more often than not , so the 66 is used less than 100% of the time.
If I guessed maybe 500 rounds or so since the new ladie was installed.